If your Fitbit is giving you bad sleep-tracking data, the fix might be simpler than you think. Here's what to check to get ...

Fitbit is adding medical record integration, smarter sleep tracking, and glucose insights, aiming to turn its app into a more personalized health companion with AI guidance based on real user data.

Add Yahoo as a preferred source to see more of our stories on Google. The Fitbit app is free to use, but Fitbit Premium adds additional features to the tracker. You can pay for Fitbit Premium on a ...